package org.apache.maven.project.artifact;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.io.File;
import java.io.IOException;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.metadata.AbstractArtifactMetadata;
import org.apache.maven.artifact.metadata.ArtifactMetadata;
import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.artifact.repository.metadata.RepositoryMetadataStoreException;
import org.codehaus.plexus.util.FileUtils;

/**
 * Attach a POM to an artifact.
 *
 * @author <a href="mailto:brett@apache.org">Brett Porter</a>
 */
public class ProjectArtifactMetadata extends AbstractArtifactMetadata {
  private final File file;

  public ProjectArtifactMetadata(Artifact artifact) {
    this(artifact, null);
  }

  public ProjectArtifactMetadata(Artifact artifact, File file) {
    super(artifact);
    this.file = file;
  }

  public File getFile() {
    return file;
  }

  public String getRemoteFilename() {
    return getFilename();
  }

  public String getLocalFilename(ArtifactRepository repository) {
    return getFilename();
  }

  private String getFilename() {
    return getArtifactId() + "-" + artifact.getVersion() + ".pom";
  }

  public void storeInLocalRepository(ArtifactRepository localRepository, ArtifactRepository remoteRepository)
      throws RepositoryMetadataStoreException {
    File destination = new File(localRepository.getBasedir(),
        localRepository.pathOfLocalRepositoryMetadata(this, remoteRepository));

    // ----------------------------------------------------------------------------
    // I'm fully aware that the file could just be moved using File.rename but
    // there are bugs in various JVM that have problems doing this across
    // different filesystem. So we'll incur the small hit to actually copy
    // here and be safe. jvz.
    // ----------------------------------------------------------------------------

    try {
      FileUtils.copyFile(file, destination);
    } catch (IOException e) {
      throw new RepositoryMetadataStoreException("Error copying POM to the local repository.", e);
    }
  }

  public String toString() {
    return "project information for " + artifact.getArtifactId() + " " + artifact.getVersion();
  }

  public boolean storedInArtifactVersionDirectory() {
    return true;
  }

  public String getBaseVersion() {
    return artifact.getBaseVersion();
  }

  public Object getKey() {
    return "project " + artifact.getGroupId() + ":" + artifact.getArtifactId();
  }

  public void merge(ArtifactMetadata metadata) {
    ProjectArtifactMetadata m = (ProjectArtifactMetadata) metadata;
    if (!m.file.equals(file)) {
      throw new IllegalStateException("Cannot add two different pieces of metadata for: " + getKey());
    }
  }

  public void merge(org.apache.maven.repository.legacy.metadata.ArtifactMetadata metadata) {
    this.merge((ArtifactMetadata) metadata);
  }
}
